scholarly journals Spin-pairing correlations and spin polarization of Majorana bound states in two-dimensional topological-insulator systems

2017 ◽  
Vol 96 (8) ◽  
Author(s):  
Kunhua Zhang ◽  
Junjie Zeng ◽  
Yafei Ren ◽  
Zhenhua Qiao
Keyword(s):  
Spin Polarization ◽  
Topological Insulator ◽  
Bound States ◽  
Two Dimensional ◽  
Majorana Bound States ◽  
Spin Pairing ◽  
Pairing Correlations

scholarly journals Topological isoconductance signatures in Majorana nanowires

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
L. S. Ricco ◽  
J. E. Sanches ◽  
Y. Marques ◽  
M. de Souza ◽  
M. S. Figueira ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Transport Properties ◽  
Spin Polarization ◽  
Bound States ◽  
Spin Asymmetry ◽  
Experimental Protocol ◽  
Zero Bias ◽  
Topological Superconductor ◽  
Hybrid Device ◽  
Majorana Bound States

AbstractWe consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends. It is demonstrated that if highly nonlocal and nonoverlapping MBSs are formed in the system, the zero-bias Andreev conductance through the dot exhibits characteristic isoconductance profiles with the shape depending on the spin asymmetry of the coupling between the dot and the topological superconductor. Otherwise, for overlapping MBSs with less degree of nonlocality, the conductance is insensitive to the spin polarization and the isoconductance signatures disappear. This allows to propose an alternative experimental protocol for probing the nonlocality of the MBSs in Majorana nanowires.

scholarly journals Delocalisation of Majorana quasiparticles in plaquette–nanowire hybrid system

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Aksel Kobiałka ◽  
Tadeusz Domański ◽  
Andrzej Ptok
Keyword(s):  
Bound States ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Edge States ◽  
Zero Energy ◽  
One Dimensional ◽  
Majorana Bound States ◽  
Entire Structure ◽  
Majorana Modes

Abstract Interplay between superconductivity, spin-orbit coupling and magnetic field can lead to realisation of the topologically non–trivial states which in finite one dimensional nanowires are manifested by emergence of a pair of zero-energy Majorana bound states. On the other hand, in two dimensional systems the chiral edge states can appear. We investigate novel properties of the bound states in a system of mixed dimensionality, composed of one-dimensional nanowire connected with two-dimensional plaquette. We study this system, assuming either its part or the entire structure to be in topologically non–trivial superconducting state. Our results show delocalisation of the Majorana modes, upon leaking from the nanowire to the plaquette with some tendency towards its corners.

scholarly journals Two-Dimensional Platform for Networks of Majorana Bound States

2017 ◽  
Vol 118 (10) ◽  
Author(s):  
Michael Hell ◽  
Martin Leijnse ◽  
Karsten Flensberg
Keyword(s):  
Bound States ◽  
Two Dimensional ◽  
Majorana Bound States

scholarly journals Enhanced Majorana bound states in magnetic chains on superconducting topological insulator edges

2020 ◽  
Vol 102 (16) ◽  
Author(s):  
Raphael L. R. C. Teixeira ◽  
Dushko Kuzmanovski ◽  
Annica M. Black-Schaffer ◽  
Luis G. G. V. Dias da Silva
Keyword(s):  
Topological Insulator ◽  
Bound States ◽  
Majorana Bound States ◽  
Magnetic Chains

scholarly journals Majorana bound states in hybrid two-dimensional Josephson junctions with ferromagnetic insulators

2018 ◽  
Vol 98 (2) ◽  
Author(s):  
P. Virtanen ◽  
F. S. Bergeret ◽  
E. Strambini ◽  
F. Giazotto ◽  
A. Braggio
Keyword(s):  
Josephson Junctions ◽  
Bound States ◽  
Two Dimensional ◽  
Majorana Bound States
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